docs: def find_reference_section(docbody):
      """Search in document body for its reference section.
  
      More precisely, find
      the first line of the reference section. Effectively, the function starts
      at the end of a document and works backwards, line-by-line, looking for
      the title of a reference section. It stops when (if) it finds something
      that it considers to be the first line of a reference section.
      @param docbody: (list) of strings - the full document body.
      @return: (dictionary) :
          { 'start_line' : (integer) - index in docbody of 1st reference line,
            'title_string' : (string) - title of the reference section.
            'marker' : (string) - the marker of the first reference line,
            'marker_pattern' : (string) - regexp string used to find the marker,
            'title_marker_same_line' : (integer) - flag to indicate whether the
                                          reference section title was on the same
                                          line as the first reference line's
                                          marker or not. 1 if it was; 0 if not.
          }
          Much of this information is used by later functions to rebuild
          a reference section.
           -- OR --
                  (None) - when the reference section could not be found.
      """
      ref_details = None
      title_patterns = get_reference_section_title_patterns()
  
      # Try to find refs section title:
      for title_pattern in title_patterns:
          # Look for title pattern in docbody
          for reversed_index, line in enumerate(reversed(docbody)):
              title_match = title_pattern.match(line)
              if title_match:
                  title = title_match.group('title')
                  index = len(docbody) - 1 - reversed_index
                  temp_ref_details, found_title = find_numeration(docbody[index:index + 6], title)
                  if temp_ref_details:
                      if ref_details and 'title' in ref_details and ref_details['title'] and not temp_ref_details['title']:
                          continue
                      if ref_details and 'marker' in ref_details and ref_details['marker'] and not temp_ref_details['marker']:
                          continue
  
                      ref_details = temp_ref_details
                      ref_details['start_line'] = index
                      ref_details['title_string'] = title
  
                  if found_title:
                      break
  
          if ref_details:
              break
  
      return ref_details